Up to 50 measurements per second can easily be performed. The device complies with the latest CE guidelines and is designed for laboratory use as well as heavy-duty industrial applications. A 2-fold and 4-fold comparator with switching outputs has been included for classifi cation and selection; this feature is particularly useful for serial tests. One special application involves the measurement of contact resistances dry-circuit measurement ; the load voltage in this case is limited to 20 mV in order to prevent fritting DIN IEC

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Temperature compensation for all materials Thermal e. Due to the rugged aluminium injection moulding desktop housing with membrane keypad it is suitable for use in laboratory and industrial environment likewise.

Wires and coils can be measured with temperature compensation. The temperature of the sample is measured with a Pt or pyrometer and the resistance is then corrected to the equivalent at e. The application range is very wide such as the measurement of: transformer motor coil windings cables and wires on the drum or as meter samples switch and relay contacts fuses connections and transitions at power rails and many more For a cooling curve recording with freely selectable time interval a data logger for up to values is available.

The complete control via RS interface enables the setup of fully automatic test stations. The instrument features a PLC interface for integration into production process control classification and makes selection of the samples an easy task. The device works according to the proven 4-wire measurement method which eliminates errors caused by test lead and contact resistances. Thermo voltages that might be in the measurement circle would be compensated automatically by this measurement method.

The control of the measurement leads is done with an integrated cable fraction detection. A temperature compensation for any given sample material such as copper, aluminium, tungsten, etc. The temperature measurement is done by an external Pt sensor or by an external infrared measurement device ref. A special measurement voltage input protection was developed for testing large inductive samples so that voltage peaks do not cause permanent damage while pinching off the sample.

All device specifi c settings are shown to the user via display. Calling up the settings is done via keypad or via PLC interface with a bit pattern 4-bits. It goes without saying that all device settings may also be effected via the available interfaces. The high-contrast LCD display with backlight assures very good reading of the measurement value in dark as well as bright spaces.


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